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Data as of Nov 9, 2026

144.121.192.0/18

41 residential-proxy exits · 30 days

Crown Castle Fiber LLC · space held by Zayo Bandwidth

Announcement
this exact prefix
No RPKI
Announced by
AS46887
Type
Internet provider
94% of it

Residential-proxy exits

Proxy exits
41
0.25% of its addresses · 30 days
Always-on exits
8
20% of its exits
Spread
26 of 64
/24s with at least one exit
Providers
74
selling exits here
Oct 10, 2026 – Nov 8, 2026

Exits seen per day

52K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
144.121.201.0/2423
144.121.221.0/2414
144.121.195.0/2413
144.121.211.0/2412
144.121.203.0/2411
144.121.251.0/2411
144.121.216.0/2411
144.121.220.0/2405
144.121.202.0/2402
144.121.241.0/2402
144.121.215.0/2402
144.121.219.0/2401
144.121.233.0/2401
144.121.218.0/2401
144.121.212.0/2401
144.121.223.0/2401
144.121.227.0/2401
144.121.232.0/2401
144.121.192.0/2401
144.121.238.0/2401
144.121.209.0/2401
144.121.245.0/2401
144.121.249.0/2401
144.121.206.0/2401

Proxy providers listing exits

  • 711Proxy
  • 9Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BirdProxies
  • BottingTools
  • Bright Data
  • ByteProxies
  • Byteful
  • CatProxies
  • CliProxy
  • ColaProxy
  • DataImpulse
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • Geonode
  • GloryCloud
  • GonzoProxy
  • HideProxy
  • IPFly
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KocerRoxy
  • Kookey
  • LemonBright
  • LudaxProxy
  • MarsProxies
  • MoMoProxy
  • MrScraper
  • NextProxy
  • NodeMaven
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • PacketStream
  • PrivateByte
  • PrivateProxy
  • ProxiesVision
  • Proxiware
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyGeo
  • ProxyRack
  • ProxyWing
  • Proxyma
  • PuraRoute
  • RainProxy
  • RealProxy
  • ResiProxies
  • RoamProxy
  • RolaProxy
  • SPYDERPROXY_PREMIUM
  • Shifter
  • TalorData
  • Thordata
  • ThunderProxy
  • TrueProxies
  • VantageProxies
  • VitalExclusive
  • WealthProxies
  • YumiProxy
  • ZENPROXY_LITE
  • ZENPROXY_PREMIUM

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
144.121.0.0/16
since Nov 2021
AS46887Internet provider129
25 always on
Zayo Bandwidth
Nesting

More-specifics by size

Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific

Announcements inside

Arrived
PrefixOriginTypeProxy exitsHolderRPKI
144.121.192.0/22
since Jun 2025
AS46887Internet provider4
1 always on
Zayo Bandwidth
144.121.196.0/22
since Apr 2025
AS46887Internet providerZayo Bandwidth
144.121.200.0/22
since Jun 2025
AS46887Internet provider6
3 always on
Zayo Bandwidth
144.121.204.0/22
since Jul 2025
AS46887Internet provider1Zayo Bandwidth
144.121.207.0/24
since Apr 2018
AS46887UnknownZayo Bandwidth
144.121.208.0/22
since Apr 2025
AS46887Internet provider3
1 always on
Zayo Bandwidth
144.121.212.0/22
since Feb 2025
AS46887Internet provider3Zayo Bandwidth
144.121.216.0/22
since Jul 2024
AS46887Internet provider3
1 always on
Zayo Bandwidth
144.121.217.0/24
since Jul 2018
AS53592BusinessZayo Bandwidth
144.121.220.0/22
since Jul 2024
AS46887Internet provider10
1 always on
Zayo Bandwidth
144.121.224.0/22
since Jan 2025
AS46887Internet provider1Zayo Bandwidth
144.121.224.0/24
since Feb 2019
AS396894BusinessZayo Bandwidth
144.121.236.0/22
since Jul 2025
AS46887Internet provider1Zayo Bandwidth
144.121.239.0/24
since Dec 2018
AS46887BusinessZayo Bandwidth
144.121.240.0/22
since Nov 2024
AS46887Internet provider2Zayo Bandwidth
144.121.244.0/22
since Jun 2025
AS46887Internet provider1Zayo Bandwidth
144.121.248.0/22
since Jun 2025
AS46887Internet provider2
1 always on
Zayo Bandwidth
144.121.252.0/22
since Sep 2024
AS46887Internet provider2Zayo Bandwidth

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
144.121.0.0/1665,536ZAYO-CCF-144-121-0-0Zayo Bandwidth (ZAYOB) · USDirect AllocationApr 29, 2016abuse@zayo.com
└ 144.121.192.0/2732NET-LT-048-144-121-192-0-27unknown———
└ 144.121.192.40/304NET-CCF---144-121-192-40-30unknown———
└ 144.121.192.68/304NET-CCF--LT-719-144-121-192-68-30unknown———
└ 144.121.192.80/298NET-144-121-192-80-29unknown———
└ 144.121.192.88/298NET-144-121-192-88-29unknown———
└ 144.121.192.96/298LTF--144-121-192-96-29unknown———
└ 144.121.192.104/298NET-CCF--144-121-192-104-29unknown———
└ 144.121.192.112/298LTF--144-121-192-112-29unknown———
└ 144.121.192.120/298NET-CCF--LT-719-144-121-192-120-29unknown———
└ 144.121.192.128/2732NET-144-121-192-128-27unknown———
└ 144.121.192.160/298NET-CCF--144-121-192-160-29unknown———
└ 144.121.192.168/298NET-SD-50960-144-121-192-168-29unknown———
└ 144.121.192.176/298NET-CCF--144-121-192-176-29unknown———
└ 144.121.192.192/298NET-144-121-192-192-29unknown———
└ 144.121.192.200/298NET-CCF--144-121-192-200-29unknown———
└ 144.121.192.224/298LTF-0-144-121-192-224-29unknown———
└ 144.121.192.240/298NET-144-121-192-240-29unknown———
└ 144.121.192.248/298NET-Z-CCF--144-121-192-248-29unknown———
└ 144.121.193.64/2816LTF--144-121-193-64-28unknown———
└ 144.121.193.80/298NET-Z-CCF--144-121-193-80-29unknown———
└ 144.121.193.88/298NET-Z-CCF--144-121-193-88-29unknown———
└ 144.121.193.128/298LTF--144-121-193-128-29unknown———
└ 144.121.193.136/298NET-CCF--144-121-193-136-29unknown———
└ 144.121.193.144/2816NET-CCF-144-121-193-144-28unknown———
└ 144.121.193.160/298LTF--144-121-193-160-29unknown———
└ 144.121.193.176/298LTF--144-121-193-176-29unknown———
└ 144.121.193.184/298LTF--144-121-193-184-29unknown———
└ 144.121.193.192/2732LTF--144-121-193-192-27unknown———
└ 144.121.193.224/304NET-CCF--144-121-193-224-30unknown———
└ 144.121.193.240/2816NET-CCF--144-121-193-240-28unknown———
└ 144.121.194.8/298NET-Z-CCF-0-144-121-194-8-29unknown———
└ 144.121.194.16/2816NET-CCF--144-121-194-16-28unknown———
└ 144.121.194.32/304NET-CCF--144-121-194-32-30unknown———
└ 144.121.194.36/304NET-144-121-194-36-30unknown———
└ 144.121.194.40/298LTF--144-121-194-40-29unknown———
└ 144.121.194.48/298NET-CCF--144-121-194-48-29unknown———
└ 144.121.194.64/2816LTF--144-121-194-64-28unknown———
└ 144.121.194.80/2816NET-CCF--144-121-194-80-28unknown———
└ 144.121.194.112/298NET-CCF--144-121-194-112-29unknown———
└ 144.121.194.128/2816NET-144-121-194-128-28unknown———
└ 144.121.194.148/304NET-CCF--144-121-194-148-30unknown———
└ 144.121.194.152/298NET-CCF--144-121-194-152-29unknown———
└ 144.121.194.160/2816NET-CCF---144-121-194-160-28unknown———
└ 144.121.194.176/298NET-CCF--144-121-194-176-29unknown———
└ 144.121.194.192/298NET-144-121-194-192-29unknown———
└ 144.121.194.200/298NET-CCF--144-121-194-200-29unknown———
└ 144.121.194.208/2816NET-144-121-194-208-28unknown———
└ 144.121.194.228/304NET-CCF--144-121-194-228-30unknown———
└ 144.121.194.232/298LTF-0-144-121-194-232-29unknown———
└ 144.121.194.240/298LTF--144-121-194-240-29unknown———
└ 144.121.195.0/2732NET-CCF--144-121-195-0-27unknown———
└ 144.121.195.40/304NET-CCF--144-121-195-40-30unknown———
└ 144.121.195.48/2816NET-144-121-195-48-28unknown———
└ 144.121.195.64/2816LTF--144-121-195-64-28unknown———
└ 144.121.195.80/298LTF--144-121-195-80-29unknown———
└ 144.121.195.96/298NET-144-121-195-96-29unknown———
└ 144.121.195.104/298NET-CCF--144-121-195-104-29unknown———
└ 144.121.195.112/298NET-CCF--144-121-195-112-29unknown———
└ 144.121.195.120/298NET-LT-717-144-121-195-120-29unknown———
└ 144.121.195.128/25128NET-144-121-195-128-25unknown———
└ 144.121.196.4/304NET-Z-CCF--144-121-196-4-30unknown———
└ 144.121.196.8/298NET-144-121-196-8-29unknown———
└ 144.121.196.16/298NET-0-144-121-196-16-29unknown———
└ 144.121.196.24/304NET-CCF---144-121-196-24-30unknown———
└ 144.121.196.32/298NET-Z-CCF--144-121-196-32-29unknown———
└ 144.121.196.48/2816NET-CCF---144-121-196-48-28unknown———
└ 144.121.196.64/298NET-144-121-196-64-29unknown———
└ 144.121.196.72/298NET-144-121-196-72-29unknown———
└ 144.121.196.80/298NET-CCF---144-121-196-80-29unknown———
└ 144.121.196.88/298NET-144-121-196-88-29unknown———
└ 144.121.196.104/298NET-144-121-196-104-29unknown———
└ 144.121.196.120/298NET-144-121-196-120-29unknown———
└ 144.121.196.128/298LTF--144-121-196-128-29unknown———
└ 144.121.196.144/2816NET-144-121-196-144-28unknown———
└ 144.121.196.160/2816LTF-LT-210-144-121-196-160-28unknown———
└ 144.121.196.176/298NET-CCF-0-144-121-196-176-29unknown———
└ 144.121.196.184/298NET-CCF---144-121-196-184-29unknown———
└ 144.121.196.192/304NET-CCF-0-144-121-196-192-30unknown———
└ 144.121.196.200/298NET-CCF--LT-794-144-121-196-200-29unknown———
└ 144.121.196.208/298NET-144-121-196-208-29unknown———
└ 144.121.196.216/298NET-CCF---144-121-196-216-29unknown———
└ 144.121.196.224/298NET-144-121-196-224-29unknown———
└ 144.121.196.240/298NET-CCF---144-121-196-240-29unknown———
└ 144.121.196.248/304NET-CCF--0-144-121-196-248-30unknown———
└ 144.121.197.0/2732NET-144-121-197-0-27unknown———
└ 144.121.197.32/298NET-144-121-197-32-29unknown———
└ 144.121.197.40/298NET-CCF---144-121-197-40-29unknown———
└ 144.121.197.56/298NET-Z-CCF-LT-288-144-121-197-56-29unknown———
└ 144.121.197.64/2816NET-144-121-197-64-28unknown———
└ 144.121.197.80/298NET-CCF---144-121-197-80-29unknown———
└ 144.121.197.88/298NET-144-121-197-88-29unknown———
└ 144.121.197.96/2816NET-Z-CCF--144-121-197-96-28unknown———
└ 144.121.197.128/2732NET-LT-183-144-121-197-128-27unknown———
└ 144.121.197.176/298NET-CCF--144-121-197-176-29unknown———
└ 144.121.197.184/304NET-CCF--144-121-197-184-30unknown———
└ 144.121.197.224/298LTF--144-121-197-224-29unknown———
└ 144.121.197.232/298NET-144-121-197-232-29unknown———
└ 144.121.197.252/304NET-Z-CCF-LT-747-144-121-197-252-30unknown———
└ 144.121.198.0/2816NET-Z-CCF--144-121-198-0-28unknown———
└ 144.121.198.16/298NET-CCF---144-121-198-16-29unknown———
└ 144.121.198.28/304NET-CCF--0-144-121-198-28-30unknown———
└ 144.121.198.40/304NET-CCF--144-121-198-40-30unknown———
└ 144.121.198.48/2816NET-SD-51289-144-121-198-48-28unknown———
└ 144.121.198.64/298NET-CCF--0-144-121-198-64-29unknown———
└ 144.121.198.96/298NET-LT-717-144-121-198-96-29unknown———
└ 144.121.198.104/298NET-CCF--0-144-121-198-104-29unknown———
└ 144.121.198.120/298NET-144-121-198-120-29unknown———
└ 144.121.198.128/2816NET-144-121-198-128-28unknown———
└ 144.121.198.144/304NET-CCF--0-144-121-198-144-30unknown———
└ 144.121.198.148/304NET-CCF--0-144-121-198-148-30unknown———
└ 144.121.198.152/298NET-144-121-198-152-29unknown———
└ 144.121.198.160/2816NET-0-144-121-198-160-28unknown———
└ 144.121.198.176/298NET-CCF--144-121-198-176-29unknown———
└ 144.121.198.184/298NET-CCF--0-144-121-198-184-29unknown———
└ 144.121.198.192/2816NET-144-121-198-192-28unknown———
└ 144.121.198.212/304NET-CCF-LT-224-144-121-198-212-30unknown———
└ 144.121.198.216/304NET-CCF-0-144-121-198-216-30unknown———
└ 144.121.198.224/298NET-CCF-LT-063-144-121-198-224-29unknown———
└ 144.121.198.232/298NET-CCF---144-121-198-232-29unknown———
└ 144.121.198.248/298LTF-0-144-121-198-248-29unknown———
└ 144.121.199.0/2816NET-CCF--144-121-199-0-28unknown———
└ 144.121.199.16/2816NET-CCF---144-121-199-16-28unknown———
└ 144.121.199.32/298NET-CCF-0-144-121-199-32-29unknown———
└ 144.121.199.40/304NET-CCF--144-121-199-40-30unknown———
└ 144.121.199.44/304NET-CCF--0-144-121-199-44-30unknown———
└ 144.121.199.48/298NET-CCF--144-121-199-48-29unknown———
└ 144.121.199.56/298NET-CCF---144-121-199-56-29unknown———
└ 144.121.199.80/298NET-CCF---144-121-199-80-29unknown———
└ 144.121.199.88/298NET-CCF-LT-063-144-121-199-88-29unknown———
└ 144.121.199.96/298NET-CCF--0-144-121-199-96-29unknown———
└ 144.121.199.104/298NET-CCF--0-144-121-199-104-29unknown———
└ 144.121.199.116/304NET-CCF--144-121-199-116-30unknown———
└ 144.121.199.120/298NET-144-121-199-120-29unknown———
└ 144.121.199.136/298NET-CCF--144-121-199-136-29unknown———
└ 144.121.199.152/304NET-CCF-0-144-121-199-152-30unknown———
└ 144.121.199.160/2816LTF--144-121-199-160-28unknown———
└ 144.121.199.176/298NET-CCF---144-121-199-176-29unknown———
└ 144.121.199.188/304NET-Z-CCF-0-144-121-199-188-30unknown———
└ 144.121.199.192/298NET-CCF-LT-063-144-121-199-192-29unknown———
└ 144.121.199.200/298NET-CCF-LT-063-144-121-199-200-29unknown———
└ 144.121.199.224/298NET-144-121-199-224-29unknown———
└ 144.121.199.232/298NET-CCF--144-121-199-232-29unknown———
└ 144.121.199.240/304NET-CCF---144-121-199-240-30unknown———
└ 144.121.200.0/24256NET-144-121-200-0-24unknown———
└ 144.121.201.0/298LTF--144-121-201-0-29unknown———
└ 144.121.201.12/304NET-CCF--0-144-121-201-12-30unknown———
└ 144.121.201.24/298NET-CCF-0-144-121-201-24-29unknown———
└ 144.121.201.64/2816NET-144-121-201-64-28unknown———
└ 144.121.201.80/304NET-CCF--144-121-201-80-30unknown———
└ 144.121.201.88/298NET-144-121-201-88-29unknown———
└ 144.121.201.96/304NET-CCF-0-144-121-201-96-30unknown———
└ 144.121.201.100/304NET-CCF-0-144-121-201-100-30unknown———
└ 144.121.201.104/298NET-144-121-201-104-29unknown———
└ 144.121.201.120/304NET-CCF-0-144-121-201-120-30unknown———
└ 144.121.201.124/304NET-CCF-0-144-121-201-124-30unknown———
└ 144.121.201.128/2732NET-144-121-201-128-27unknown———
└ 144.121.201.160/2816NET-CCF--0-144-121-201-160-28unknown———
└ 144.121.201.176/298NET-CCF--144-121-201-176-29unknown———
└ 144.121.201.208/2816NET-CCF-144-121-201-208-28unknown———
└ 144.121.201.224/298NET-144-121-201-224-29unknown———
└ 144.121.201.232/298NET-CCF---144-121-201-232-29unknown———
└ 144.121.201.240/304NET-CCF-0-144-121-201-240-30unknown———
└ 144.121.201.244/304NET-CCF---144-121-201-244-30unknown———
└ 144.121.201.248/298NET-CCF--144-121-201-248-29unknown———
└ 144.121.202.0/2732NET-144-121-202-0-27unknown———
└ 144.121.202.48/304NET-CCF--144-121-202-48-30unknown———
└ 144.121.202.56/298NET-144-121-202-56-29unknown———
└ 144.121.202.64/2732NET-144-121-202-64-27unknown———
└ 144.121.202.96/2816NET-144-121-202-96-28unknown———
└ 144.121.202.120/304NET-CCF--0-144-121-202-120-30unknown———
└ 144.121.202.140/304NET-CCF--144-121-202-140-30unknown———
└ 144.121.202.160/2732NET-CCF--144-121-202-160-27unknown———
└ 144.121.202.192/298NET-144-121-202-192-29unknown———
└ 144.121.202.200/298NET-CCF--144-121-202-200-29unknown———
└ 144.121.202.232/298NET-CCF-0-144-121-202-232-29unknown———
└ 144.121.202.240/2816NET-144-121-202-240-28unknown———
└ 144.121.203.8/298NET-CCF--144-121-203-8-29unknown———
└ 144.121.203.32/2732NET-LT-638-144-121-203-32-27unknown———
└ 144.121.203.64/298NET-144-121-203-64-29unknown———
└ 144.121.203.72/304NET-Z-CCF--144-121-203-72-30unknown———
└ 144.121.203.80/2816NET-144-121-203-80-28unknown———
└ 144.121.203.104/304NET-CCF--144-121-203-104-30unknown———
└ 144.121.203.112/298NET-Z-CCF-LT-422-144-121-203-112-29unknown———
└ 144.121.203.120/298NET-Z-CCF-LT-422-144-121-203-120-29unknown———
└ 144.121.203.128/298LTF--144-121-203-128-29unknown———
└ 144.121.203.140/304NET-CCF--0-144-121-203-140-30unknown———
└ 144.121.203.148/304NET-CCF--144-121-203-148-30unknown———
└ 144.121.203.152/298LTF--144-121-203-152-29unknown———
└ 144.121.203.164/304NET-CCF--144-121-203-164-30unknown———
└ 144.121.203.168/298NET-CCF--144-121-203-168-29unknown———
└ 144.121.203.184/298NET-144-121-203-184-29unknown———
└ 144.121.203.192/298NET-144-121-203-192-29unknown———
└ 144.121.203.208/298LTF-LT-693-144-121-203-208-29unknown———
└ 144.121.203.224/2816NET-144-121-203-224-28unknown———
└ 144.121.203.248/304NET-Z-CCF--144-121-203-248-30unknown———
└ 144.121.204.0/298LTF--144-121-204-0-29unknown———
└ 144.121.204.8/298LTF--144-121-204-8-29unknown———
└ 144.121.204.16/298NET-LT-717-144-121-204-16-29unknown———
└ 144.121.204.24/304NET-CCF--144-121-204-24-30unknown———
└ 144.121.204.28/304NET-CCF--144-121-204-28-30unknown———
← Previous1–200 of 1,166 · page 1 of 6Next →

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

16,384 addresses
TypeAddressesShareRanges
Internet provider15,36094%16
Business7684.7%3
Unknown2561.6%1

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS46887

US
Name
Crown Castle Fiber LLC
Type
Internet provider
Registered
Apr 13, 2009
Domain
zayo.com
Website
www.crowncastle.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed